Decorative wall lamp



FIG. 1 is a perspective view of a decorative wall lamp, showing my new design;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a right side elevational view thereof;

FIG. 4 is a left side elevational view thereof,

FIG. 5 is a bottom view thereof;

FIG. 6 is a top plan view thereof; and,

FIG. 7 is a rear view thereof. 

The ornamental design for a decorative wall lamp, as shown and described. 